Improvement in ball-joints for chandeliers



UNITED STATES PATENT OFFICE.,

JEAN V.MATHIVET, OF CLEVELAND, OHIO.

IMPROVEMENT IN BALL-JOINTS FOR CHANDELIRS.

Specification forming part of Letters Patent No. 156,228, dated October 27, 1874'; application filed June 3o, 1874.

To all whom it may concern: j

Be it known that I, J EAN V. MATHIVET, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and Improved Ball-Joint for Chandeliers and I do hereby declare that the following is a full, clear, and complete description thereof, reference being had tothe accompanying drawing, making part of the same.

Figure l is an outside View of the gas-fixture or ball-joint. Fig. 2 is a transverse vertical section. Fig. 3 is an end view. Figs. 4, 5, 6, and 7 are detached sections.

Like letters of reference refer to like parts in the several views. i I

The nature of this invention relates to a valve used in combination with a gas-fixture coupling or ball-joint, for the purpose of regulating the iiow of gas to the burners of a chandelier, the valve being operated by the adjustment of the coupling, substantially in the manner as follows:

The coupling above referred to consists of a chambered nut, A, Figs. 1 and 2, of which the part C is the chamber. A detached View of the nut is shown in Fig. 5. To the chambered part ofthe nut is screwed a shell or bowl, D, a detached view whereof is shown in Fig. 3.l To the bowl is fitted a swivel-nut or hanger, E, Fig. 1, of which Fig. 4 is a detached View. Said hanger consists of a nut, F, and a semispherical head, G, which is of a size to flt in 4the corresponding concave of the bowl referred to, as'shown in Fig. 2, in which it will be seen that the neck of the hanger is much smaller than the opening in the bottom of the bowl through which it passes, whereby the nut F is allowed a freedom of movement in consequence of the ball-and-socket-like joint, consistin g of the head G and the bowl D, in which the head is held, and whereby the nut is suspended. In the top of the head are four studs, arranged in the order as shown in Fig. 4, between which is received and retained in place the wing H of the valve I, Fig. 7, as shown in Fig. 2. The valve I is secured in the nut A by a stem, b, and nut O, as shown in said Fig. 2,' in which it will be seen that the bottom of the nut forms the seat of the valve, and on Which the valve turns for bringing the ports c thereof in open relation to the ports d of the valve-seat, or for closing the same. The ports c of the valve are connected to each other by a groove, c, Fig4 7, the purpose of which will presently be shown. Interposed between the head G and the bottom of the chamber C is a spring, J, Fig. 2, the purpose of which is to keep the head G in close contact with the concave in which it turns,- to insure a gas-tight joint of the two ports, and also to prevent the joint from moving too freely. A detached View of the spring is shown in Fig. 6. The relative position and arrangement of the several parts in respect to each other are shown in Fig. 2, and the operation whereof is as follows:

As aforesaid, the object of this coupling is for suspending a chandelier' from the ceiling, or rather from the gas-pipe thereof, which is done by screwing the nut A thereon. To the lower end of the coupling the pipe of the chandelier is secured by the nut F. The purpose of theball-and-socket joint, above described, is to permit a universal swing or vibration of the chandelier, and to allow it to hang perpendicular] y when undisturbed by any lateral influence.

The chandelier, when thus attached to and suspended from the gas-pipe in the ceiling, is supplied with gas from said pipe by its passing through the coupling-th us: Through the port d and the portcof the valve, which are in open relation to each other, as show-n in Fig. 2, into the chamber C, thence down the swivel-hanger E to the shaft of the chandelier screwed thereto, along which, to the several burners, each whereof is supplied with a stopcock, which may now be opened for lighting the burners.

It is sometimes desirable to have less light than` all the burners give withy a full head of gas on. To effect this end, it is necessary either to shut olf some of the burners entirely, or all of them partially. For the latter way each gas-cock must be partially turned to shut off a part of the gas; or, for the former way more or less of the cocks are turned entirely, to shut off the gas wholly. To do this is a matter of some trouble, and considerable time is required, more especially when the burners are numerous. The gas can be partially shutoff, and thereby have less light by means of the main gas-cock, butin doing it by thisv mean's other chandeliers and burners are equally shut oft', which may not -be desirable, as the light only of one or more chandeliers needs to be partially subdued. To avoid this.

trouble in manipulating the several cocks of the chandelier is the purpose of the valvel, above described, and which is operated, for the purpose of shutting o the gas partially, by turning the chandelier a quarter of the Way around, which will bring the blank of the valve over the portd of the valve'seat, thereby shutting oft' the gas, but not Wholly, as asmall amount will continue to pass to the burners through the groove or channel ein the face of the valve leading from one port to the other, as shown in Fig. 7. Said groove, when the valve is turned quartering, will be over one of the ports d, which will allow sufficient gas to 110W to the burners to make a subdued light.

This turning around of the chandelier for the hpurpose specified is easily done, as the head G of the joint moves easily in its seat, and which, as it turns, carries around with it the valve attached thereto in a loose manner, by the studs a and wingH, as above described.

It Willgbe obvious that, on not turning the valve by means of the chandelier so far around asa quarter, but any degree less than that, the ports c d will have a more or less open relation to each other, so that any amount of gas less than-a full head can be let ou, as may be desired.

l claim- In balljoints for chandeliers, the valve I, having a stem, b, Wing or bar H, and ports c, connected to each other by a groove or gasyWay, e, in the manner as described, and for Witnesses W. H. BURRIDGE, A. F. CORNELL. 

